these 2 derivations will be built:
  /nix/store/16zw5yp0h3p1gh4dlivypqzhq1g859pm-codex-acp-2.1.1.drv
  /nix/store/l8kb9nskvhj3hfaf6sinwvha4cqlvjb1-check-codex-acp.drv